Bitcoin Forum

        public void GetInfo()
        {

            string parameters = $"method=getInfo&nonce=" + (int)(DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds;

            string address = $"{tapi}/";

            var keyByte = Encoding.UTF8.GetBytes(secret);

            string sign1 = string.Empty;
            byte[] inputBytes = Encoding.UTF8.GetBytes(parameters);
            using (var hmac = new HMACSHA512(keyByte))
            {
                byte[] hashValue = hmac.ComputeHash(inputBytes);

                StringBuilder hex1 = new StringBuilder(hashValue.Length * 2);
                foreach (byte b in hashValue)
                {
                    hex1.AppendFormat("{0:x2}", b);
                }
                sign1 = hex1.ToString();
            }

            WebRequest webRequest = (HttpWebRequest)System.Net.WebRequest.Create(address);
            if (webRequest != null)
            {
                webRequest.Method = "POST";
                webRequest.Timeout = 20000;
                webRequest.ContentType = "application/x-www-form-urlencoded";
                webRequest.Headers.Add("Key", key);
                webRequest.Headers.Add("Sign", sign1);

                webRequest.ContentLength = parameters.Length;
                using (var dataStream = webRequest.GetRequestStream())
                {
                    dataStream.Write(inputBytes, 0, parameters.Length);
                }

                using (System.IO.Stream s = webRequest.GetResponse().GetResponseStream())
                {
                    using (System.IO.StreamReader sr = new System.IO.StreamReader(s))
                    {
                        var jsonResponse = sr.ReadToEnd();
                        Console.WriteLine(String.Format("Response: {0}", jsonResponse));
                    }
                }
            }

        }

$local:Key = ''
$local:Secret = ''
$local:Nonce = [int](New-TimeSpan -Start ([DateTime]"01/01/2020 00:00") -End (Get-Date)).TotalSeconds

$local:Message = "method=getinfo&nonce=$Nonce"

$local:HMACSHA = New-Object System.Security.Cryptography.HMACSHA512
$HMACSHA.key = [Text.Encoding]::UTF8.GetBytes($Secret)
$local:Signature = $HMACSHA.ComputeHash([Text.Encoding]::UTF8.GetBytes($Message))
$Signature = [Convert]::ToBase64String($Signature)

$local:Result = Invoke-WebRequest -URI 'https://yobit.net/tapi/' -Method 'POST' -ContentType 'application/x-www-form-urlencoded' -Headers @{Sign = $Signature; Key = $Key} -TimeoutSec 20

Write-Host $Result